Granted Patent
Utility
US 5,196,136 · App. 07/718,543
Cleaning composition of hydrocarbon component, surfactant and multibasic ester additive
Inventors:
Kenneth T. Dishart, Harold L. Jackson, Abraham B. Cohen
Patented Case
View Patent ↗
Granted: Mar 23, 1993
Filed: Jun 20, 1991
Inventors
Kenneth T. Dishart
Harold L. Jackson
Abraham B. Cohen
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.